private Matrix4d getSingleMatrixA(DicomFile file)
{
double[] i = file.Dataset.Get <double[]>(DicomTag.ImageOrientationPatient);
double[,] F =
new double[, ]
{
{ i[3], i[0] },
{ i[4], i[1] },
{ i[5], i[2] }
};
Point3d F0 = new Point3d(F[0, 0], F[1, 0], F[2, 0]);
Point3d F1 = new Point3d(F[1, 1], F[1, 1], F[2, 1]);
var n = F0.Cross(F1);
double[] T1 = file.Dataset.Get <double[]>(DicomTag.ImagePositionPatient);
double[] TN = file.Dataset.Get <double[]>(DicomTag.ImagePositionPatient);
double[] px = file.Dataset.Get <double[]>(DicomTag.PixelSpacing);
double dr = px[0];
double dc = px[1];
double k1 = n.X * 2;
double k2 = n.Y * 2;
double k3 = n.Z * 2;
Matrix4d A = new Matrix4d(
new double[] { F[0, 0] * dr, F[1, 0] * dr, F[2, 0] * dr, 0, F[0, 1] * dc, F[1, 1] * dc, F[2, 1] * dc, 0, k1, k2, k3, 0, T1[0], T1[1], T1[2], 1 });
return(A);
}
public void Point3dCrossTest()
{
var p1 = new Point3d(1, 2, 3);
var p2 = new Point3d(3, 2, 1);
var p = p1.Cross(p2);
Assert.AreEqual(p.X, -4);
Assert.AreEqual(p.Y, 8);
Assert.AreEqual(p.Z, -4);
}
public void Point3d_Cross_123_456()
{
Point3d a = new Point3d(1.0, 2.0, 3.0),
b = new Point3d(4.0, 5.0, 6.0);
Point3d actual = a.Cross(b);
Point3d expected = new Point3d(-3.0, 6.0, -3.0);
Assert.That(actual.x, Is.EqualTo(expected.x).Within(1).Ulps);
Assert.That(actual.y, Is.EqualTo(expected.y).Within(1).Ulps);
Assert.That(actual.z, Is.EqualTo(expected.z).Within(1).Ulps);
}
public void Point3d_Cross_123_456()
{
Point3d a = new Point3d(1.0, 2.0, 3.0),
b = new Point3d(4.0, 5.0, 6.0);
Point3d actual = a.Cross(b);
Point3d expected = new Point3d(-3.0, 6.0, -3.0);
Assert.That(actual.x, Is.EqualTo(expected.x).Within(1).Ulps);
Assert.That(actual.y, Is.EqualTo(expected.y).Within(1).Ulps);
Assert.That(actual.z, Is.EqualTo(expected.z).Within(1).Ulps);
}
public void Point3d_Cross_Oddball()
{
// I started with random numbers for a and b, got the values of
// 'expected', then used the Visual Studio debugger's Watch panel
// to get (double)(float)value. This test case will therefore serve
// only as a regression test in case I do something stupid.
Point3d a = new Point3d(0.001, 0.0001, 0.00001),
b = new Point3d(473.6, 9.0, 1.1);
Point3d actual = a.Cross(b);
Point3d expected = new Point3d(0.000020000000000000012, 0.0036360000000000003, -0.038360000000000005);
Assert.That(actual.x, Is.EqualTo(expected.x).Within(1).Ulps);
Assert.That(actual.y, Is.EqualTo(expected.y).Within(1).Ulps);
Assert.That(actual.z, Is.EqualTo(expected.z).Within(1).Ulps);
}
public void Point3d_Cross_Oddball()
{
// I started with random numbers for a and b, got the values of
// 'expected', then used the Visual Studio debugger's Watch panel
// to get (double)(float)value. This test case will therefore serve
// only as a regression test in case I do something stupid.
Point3d a = new Point3d(0.001, 0.0001, 0.00001),
b = new Point3d(473.6, 9.0, 1.1);
Point3d actual = a.Cross(b);
Point3d expected = new Point3d(0.000020000000000000012, 0.0036360000000000003, -0.038360000000000005);
Assert.That(actual.x, Is.EqualTo(expected.x).Within(1).Ulps);
Assert.That(actual.y, Is.EqualTo(expected.y).Within(1).Ulps);
Assert.That(actual.z, Is.EqualTo(expected.z).Within(1).Ulps);
}
public Plane(string map_line, bool flip_normal = false)
{
char[] plane_delims = { '(', ')', ' ' };
string[] plane_strings = map_line.Split(plane_delims, StringSplitOptions.RemoveEmptyEntries);
double a_x, a_y, a_z;
Double.TryParse(plane_strings[0], out a_x);
Double.TryParse(plane_strings[1], out a_y);
Double.TryParse(plane_strings[2], out a_z);
double b_x, b_y, b_z;
Double.TryParse(plane_strings[3], out b_x);
Double.TryParse(plane_strings[4], out b_y);
Double.TryParse(plane_strings[5], out b_z);
double c_x, c_y, c_z;
Double.TryParse(plane_strings[6], out c_x);
Double.TryParse(plane_strings[7], out c_y);
Double.TryParse(plane_strings[8], out c_z);
this.f_a = new Point3d(a_x, a_y, a_z);
this.f_b = new Point3d(b_x, b_y, b_z);
this.f_c = new Point3d(c_x, c_y, c_z);
Point3d vec_a = new Point3d(this.b - this.a),
vec_b = new Point3d(this.c - this.a);
this.f_normal = vec_a.Cross(vec_b).Normalize();
if (flip_normal)
{
this.f_normal = new Point3d(-this.f_normal.x, -this.f_normal.y, -this.f_normal.z);
}
}
/// <summary>
/// Sort the files based on the offset position from the first (sorted) file
/// See http://nipy.org/nibabel/dicom/dicom_orientation.html
/// </summary>
/// <param name="files"></param>
/// <returns></returns>
private DicomFile[] sort(DicomFile[] files)
{
if (files.Length == 1)
{
return(files);
}
if (files[0].Dataset.Get <double>(DicomTag.SliceLocation, double.MaxValue) != double.MaxValue)
{
return(sortBySliceLocation(files));
}
DicomFile[] sortedArray = new DicomFile[files.Length];
//d should be an offset from the first (sorted) file.
double[] d = new double[files.Length];
double ds = 1;
for (int j = 0; j < files.Length; j++)
{
double[] i = files[j].Dataset.Get <double[]>(DicomTag.ImageOrientationPatient);
double[] Tj = files[j].Dataset.Get <double[]>(DicomTag.ImagePositionPatient);
Point3d F0 = new Point3d(i[3], i[4], i[5]);
Point3d F1 = new Point3d(i[0], i[1], i[2]);
var n = F0.Cross(F1) * ds;
d[j] = Tj[0] * n.X + Tj[1] * n.Y + Tj[2] * n.Z;
}
List <DicomFile> sortedList = new List <DicomFile>();
List <double> sortedListD = new List <double>();
sortedList.Add(files[0]);
sortedListD.Add(d[0]);
for (int i = 1; i < files.Length; i++)
{
for (int j = 0; j < sortedList.Count; j++)
{
if (sortedList.Count == 1)
{
if (sortedListD[j] > d[i])
{
sortedList.Add(files[i]);
sortedListD.Add(d[i]);
break;
}
else
{
sortedList.Insert(0, files[i]);
sortedListD.Insert(0, d[i]);
break;
}
}
else if (j < sortedList.Count - 1)
{
if (d[i] >= sortedListD[j] && d[i] <= sortedListD[j + 1])
{
sortedList.Insert(j + 1, files[i]);
sortedListD.Insert(j + 1, d[i]);
break;
}
}
else
{
sortedListD.Add(d[i]);
sortedList.Add(files[i]);
break;
}
}
}
return(sortedList.ToArray());
}
public Plane(string map_line, bool flip_normal=false)
{
char[] plane_delims = { '(', ')', ' ' };
string[] plane_strings = map_line.Split(plane_delims, StringSplitOptions.RemoveEmptyEntries);
double a_x, a_y, a_z;
Double.TryParse(plane_strings[0], out a_x);
Double.TryParse(plane_strings[1], out a_y);
Double.TryParse(plane_strings[2], out a_z);
double b_x, b_y, b_z;
Double.TryParse(plane_strings[3], out b_x);
Double.TryParse(plane_strings[4], out b_y);
Double.TryParse(plane_strings[5], out b_z);
double c_x, c_y, c_z;
Double.TryParse(plane_strings[6], out c_x);
Double.TryParse(plane_strings[7], out c_y);
Double.TryParse(plane_strings[8], out c_z);
this.f_a = new Point3d(a_x, a_y, a_z);
this.f_b = new Point3d(b_x, b_y, b_z);
this.f_c = new Point3d(c_x, c_y, c_z);
Point3d vec_a = new Point3d(this.b - this.a),
vec_b = new Point3d(this.c - this.a);
this.f_normal = vec_a.Cross(vec_b).Normalize();
if (flip_normal)
this.f_normal = new Point3d(-this.f_normal.x, -this.f_normal.y, -this.f_normal.z);
}
